Means fob milking domestic farm



Sept. 2, 1952 DUNCAN Re. 23,544

MEANS FOR MILKING DOMESTIC FARM ANIMALS AND FOR TEMPORARILY STORING MILK AND COOLING IT oyiginal Fil d J 13, 1946 4 Sheets-Sheet 1 I m/entor {ab y-3.2020022 B 9mm WWW Jaffliiiimw .1

I u uentor gill!!! l Re. 23,544 IC FARM ANIMALS AND FOR MILK AND COOLING IT 4 Sheets-Sheet 2 v I l I I I I I I I I I I I I I l I I I l I 1 i I i1 x "5% 2 H llhlllll N A c N l n. v mm 9 Z$V a: v if m. in fl M U m W mm I1! I m mu 0 ml fl a m m. y n

MEANS Original Filed June UWWM WI- F 47 Sept. 2, 1952 pt 1952 GQR. DUNCAN Re. 23,544

MEANS FOR MIL-KING DOMESTIC FARM ANIMALS AND FOR 7 TEMPORARILY STORING MILK AND COOLING IT Original Filed June 13, 1946 4 Sheets-Sheet 5 Sept. 2, 1952 G. R. DUNCAN Re. 23,544

MEANS FOR MILKING DOMESTIC FARM ANIMALS AND FOR TEMPORARILY STORING MILK AND COOLING IT Original Filed June 13, 1946 4 Sheets-Sheet 4 -53 f 74 5 Z? I 3' a; ,6/ a? 9'2 Inventor f eazye flizazc'azzv y A860 EMU,

Reissued Sept. 2, 1952 MEANS FOR LIILKING DOMESTIC FARM ANIMALS AND FOR TEMPORABILY STORING MILK AND COOLING IT George R. Duncan, Washington, Mo.

Original No. 2,470,979, dated May 24,'1949, Serial No. 676,368, June 13, 1946. Application for reissue November 28, 1950, Serial No. 198,017

17 Claims.

(Ci. 119-14139) I Matter enclosed in heavy brackets II appears in the original patent but forms no part of this reissue specification; matter printed in italics indicates the additions made by relssue.

The present invention relates to a [method and] means to handle the steps of milking and collecting and cooling of milk in an economical and expeditious manner.

More specifically the underlying principle of the invention is to refrigerate milk direct from a cow's udder and to accomplish such results, through the medium of a highly practicable and satisfactory assemblage of components, devices, and parts.

In carrying out the principles of the invention I contemplate milking the cows in their stalls in a conventional barn, this through the medium 01' a container or milk cooler, such as a portable conveyance, said [conveyance] container or milk cooler bein moved progressively along the runway between opposed stalls, said container or milk cooler [conveyance] being provided with one or more milk cans or equivalent containers and a [pulsator or] milking machine being hooked up at one end to the udder of the cow and communicating and being hooked up at the opposite end to means to deliver the milk into cans or 0. equivalent receptacle [receptacles].

Stated with greater particularity, and in keeping with my ideas, I provide a support, [preferably a mobile conveyance], cooling means on the support, a milk receiving and temporary storing container or can on said support and automatic suction controlled milking means attachable at one end to the cow's udder and arranged and communicating at its opposite end with said container, where-by to take the milk direct from the cow and to deliver it into said container cooled and ready for handling.

Modern dairy barns are provided with valved depending accommodation pipes for milking machines and therefore one phase of the invention has to do with the provision of a special head which is applicable to the milking machine, said head being fashioned to fit in the neck of a regulation milk can and the milk can being contained in the refrigerated compartment in a. refrigerator, the refrigerator being on or a part of r a truck.

Alternate forms of refrigerated or cooled can supporting conveyances are utilized and suitable appliances provided for making a connection between the milking machine and intake neck of the milk can and these objects and advantages will be set forth as the descriptive specifications proceed.

Other objects, features and advantages of the invention will .become more readily apparent from the following description of the accompanying iliustrative drawings.

In the drawings, wherein like numerals are employed to designate like parts throughout the views:

Figure 1 is a perspective view showing the fragmentary portion of a dairy lbarn, showing pulsator type milking machines in use, and showing same operatively connected up with the multiple can containing refrigerator cabinet;

Figure 2 is a longitudinal sectional and elevationai view through the preferred refrigerator cabinet showing a multiplicity of milk cans therein and also showing the compressor and fan, and a suction pump such as may be utilized on the refrigerator as a part of the milking machine;

Figure 3 is a transverse vertical sectional and elevatlonal view through the assemblage seen in Figure 2 this to bring out the provision and arrangement of one of the delivery heads connected up with a milk can;

Figure 4 is a fragmentary perspective view showing retaining means for a removable shield such as is used for sanitary purposes on exposed side walls of the refrigerator cabinet;

Figure 5 is a section on the line 55 of Figure Figure 6 is an elevational view of a different type of conveyance, this for single cans, the same embodying modified means for pre-cooling the milk before it enters the can;

Figure 7 is a view in section and elevation showing the insulated can container removed from the truck or conveyance and showing a closing lid thereon;

Figure 8 is a view in section and elevation taken vertically and centrallythrough the structure seen in Figure 6;

Figure 9 is a top plan view of the structure illustrated in Figure 6;

Figure 10 is a cross-section, enlarged, on the line Ill-l0 of Figure 8;

Figure 11 is an enlarged sectional view through the feeder and delivery head used at the left in Figure 3;

Figure 12 is a modified structure for delivering and feeding milk into a milk can, the latter in the refrigerator cabinet.

Reference is had first to Figure 1 of the drawings showing a fragmentary portion of a dairy barn. To bring out the basic ideas and principles of the invention I have shown fragmentary representations of cows A and B, the stalls C and D, the gutter equipped runway E and depending milking machine accommodation pipes F and G. These pipes F and G are provided with valved devices, of any suitable type, H for purposes of accommodating [pulsator type] milking ma- 'The automatic control of the refrigerating milking machine. I might point out here that it is within the range of the invention to use existing suction equipment in the ham or to so construct the refrigerator conveyance as to include the source of suction directly thereon. In the broad arrangement seen in Figure 1 the refrigerator cabinet or conveyance is denoted by the numeral l4 and is adapted to house a. plurality of milk cans II as shown in Figure 2. With reference to Figure 2 the conveyance is a refrigerator cabinet properly constructed and in! sulated. the same being of appropriate dimensions in form and including wheels It to travel on rails or tracks ll provided in the aforementioned runway E. The removable top or cover II is provided with openings ll, these to accommodate lids 2. arranged over the intake necks of the milk cans. The entire cover and lids come .03. as a unit. to permit'the cans to be inserted and removed. n the'interior of the cabinet. as

pressor 21, motor 28. and fan II. A circulator pipe ll serves to feed the cooling coil II. The fanisarrangedtoblowaircurrents againstthe coil and into the compartment of the refrigerator.

n may be of an: conventional type; [and may include. for instance, a pressure controlled switch I'll that will shut of! current to the motor when the pressure in the high side of the compressor is reduced below a predetermined amount and. similarly. will operate to connect the motor as the pressure increases to this amount or rises above it] This invention is not concerned with any specific type of control. The numerals ll designate paper or equivalent removable shields used as anti-splash guards on those sides or faces oi the refrigerator facing the stalls. The ends are folded or bent and held in place by clamping strips I! (see Figure 4) these beinghingedlymountedatllonearsll. The

clamping strips are provided with lugs 35 for supporting thumb screw 36 to accomplish or attain the desired clamping action (see mute In the form of the invention so far described we have-a conveyance truck in the form of a w refrigerated milk can or cabinet. This may be of the type men in Figure 1 wherein the aerator or refrigeration unit is built on one end of the cabinet. Or, I may provide on the same end a suction pump 31 with a suction line II and a siredtoincludethesuctionmeansasanattend- 7o ingpartofthe conveyance..InFigure 1 .the

suction is obtained by way of the valved pipe lines I and G. Therefore this arrangement of thehosellinFlgurelisshownconnected p 4 vided with teat cups 4! connected with the teats on the cow's udder. The hose lines It and II connect with an accommodation distributor, delivery and feeder head 43 as shown in Figure 3,

This head may be of variable form. In the ar rangement seen in Figure 3 it is in the form of an inverted cup-like shell ll to which the pipe lines! and II connect as shown in Figure l.

, The lower end of the shell as at 6 is flanged and fits into the neck of the milk can as at I! in Figure 11. A gasket is provided at l! to supply the desired pipe Jointed connection between the head I! and the top of the refrigerator-cabinet. As seen in Figure 11 the head includes a distributing tube 48 and a spray head 49 to facililate the operation of showering the milk down "into the can. The numeral Ill designates a sight window mounted on a collar 5| these features serving to permit the attendant to inspect the operation and to determine the results from time to time. If desired the entire head 43 can be transparent to permit oneto readily determine when the can is properly filled.

As is obvious, the suction is created within the confines of the head 43-, using the suction line 40 for that purpose. Thus, the desired suction is provided in the line I and the milk is drawn in and deposited in the head and then in the can.

In the modification seen in Figure 12 a different type of adaptor head is-provided. This comprises a sleeve 52 fitting into the opening in the cabinet cover and having a flange II with a packing ring II. The sleeve is provided with a reduced end 85 fitting into the neck of the can and also an intermediate annulus serving as a seat for the insulated can closing plug 58. This serves to accommodate a pipe fitting II to which the hose ll is connected. The remaining hose II is also connected to the closure II. This is just a variation in way and means of hooking up the hose lines of the milking machine with the refrigerator can containing cabinet.

Coming now to the modified and simplified construction seen in Figures 6, 7, 8, 9 and 10 it will be seen that the truck or conveyance comprises a platform It with rollers or wheels I! and an upstanding accommodation flange for an insulated receptacle or container 6|. This serves to accommodate the milk can 82. Also it has a removable fitting or collar BI surrounding the intake neck of the can. Any suitable type of adaptor head it is provided to accommodate the milk line or hose i5 and suction line or hose It. In the form of the invention under consideration the milk from the udder of a cow is taken in by way of the hose line 61 where it enters a pipe OI mounted in insulation es in a horizontal cylindrical unit III. This cooling unit includes a coil ll through and beyond which the pipe" extends where it connects up with the aforementioned milk delivery llne or hose ii. I provide clamps l2 and I3 which surround the cylinder 1. and are held in place by braces II and IS. The refrigerant circulator and compressor unit is indicated at It and is mounted in a housing 11 on the platform. the same being provided with supply and return pipes II and I! connected up with the aforementioned cooling coil. The numerals ill designate an appropriate suction pump which creates suction in the aforementioned suction line Ii.

If desired the container 6| may be removed from the platform as shown in Figure '7 at which withthevalve deviceH. Thcotherhosell ispron, time an appropriate closing lid II is employed as a cover for the neck of the milk can. The entire collar Cl can be lifted off of the main or body portion of the insulated container 8| to permit the milk can to be easily inserted and removed. I 5

The following are some of the outstanding aspects of the constructions herein shown and described, to wit:

A. The milk is refrigerated direct from the cow's udder in the first container. Milk from 10 udder is conveyed to can in refrigerator cabinet with any suitable piping hose suitable for milk.

A milking machine is used to draw the milk from the cow's udder to the refrigerator and into the can. A milking machine vacuum pump is installed on the milk refrigerator. The milking machine is made to work in connection with milk refrigerator to cause the milk to be refrigerated. The milking machine can be mounted on the refrigerator cabinet, conveying the milk to can through a small pipe into can. A part. or all parts, necessary to successfully run the milking machine, are connected to cabinet, at any suitable place on cabinet.

B. A portable milk refrigerator comprising a compressor or equivalent means to refrigerate the milk as it runs into a can while latter is inside the cabinet, or a suitable altemative arrangement which functions to maintain the cans at a certain temperature where, for example, the 80 milk is refrigerated by the way of delivery pipes before said milk enters the can. Mechanical refrigerating equipmentof the present type, provided with means for controlling the refrigerating and cooling means, is shown by the patent to Smith, No. 1,913,345, granted June 6, 1933 (page 2,1ines 16 to 22) and the patent to Keyser, No. 2,285,520, granted June 9, 1M2 (page 3, paragraph 1, lines 15 to 20).

It is understood that in Figure 1 I show only the refrigerated cabinet, the suction pump in this arrangement being omitted and the suction being obtained by way of the already existing lines F and G in the dairy barn. In other words here all that is necessary is to provide a special head I3 on the hose line H of a milking machine and to thus employ installations already in use.

In the arrangement seen in Figure 2 the suction pump 31 is provided on the refrigerator or cabinet permitting the milking machine to be made a part of the cabinet. It follows that the invention is intended to comprehend thearrangement seen in Figure 1 regardless of the source of suction or the arrangement seen in Figure 2 wherein the suction pump is built on the refrigerator or cabinet.

The invention also covers the modification of Figures 6, 8 and 9 wherein the milk is cooled before it goes into the can. It follows that the cooling step can be attended to at the stage indicated in Figure 8, or the milk can be fed into the can and then the milk and can refrigerated in the refrigerator compartment as shown in Figures 2 and 3.

Reference being had at this stage to Figure 12 35 I direct attention to the fact that the closing lid BI is provided with a suitable vent 8la which affords communication between the interior of the milk can and the surrounding atmosphere.

I have shown this ventprovided with a whistle 7o 82 of any appropriate construction which serves to audibly notify the attendant when the can is nearly fullof milk. The ball float B3 is provided with a stem Bl that is connected to the valve '5. When the can is nearly full of milk,

the float It moves upwardly, raising valve I! from its seat to thereby permit admission of air to the whistle l2.

It will be noted that the mechanical refrigerator and dissipating means comprises the structure shown at the left of Figure 2, the same being an illustration of one o the forms this invention may take. In the form shown. the refrigerator 14. compressor motor 28, Jan 29, cooling coil26, circulator pipe 30 and the other parts are illustrated and described. The above named structure acts as the dissipating means for removing heat from the interior of the refrigerator cooling chamber and from the milk can or cans as the can sides heat up because they are being filled with milk during the milking operation.

The present application is a development of the subject-matter of my Patent No. 2,425,519, granted August 12, 1947, in which is disclosed another form of cooling the milk'cans.

The word "can" in the claims designates a container of any well-known or any desired shape.

The word "dissipating in the claims means getting rid of, or the removal of heat by the mechanical refrigerating means.

Changes in shape, size, and materials and rearrangements of details and parts may be resorted to in actual practice, so long as they do not depart from the spirit of the invention or the scope of the appended claims, as is well understood.

I claim:

[1. A system for simultaneously milking a domestic farm animal and for cooling and storing the milk, without handling, in cans as it comes from the animal comprising ,a container for holding a milk can in an upright position, a milking machine including a first conduit means adapted for connection to a source of minus pressure, a second conduit means having teat cups for connection to the teats of the animal's udder, closure means closing the open end of said can and for permitting a minus pressure therein during the milking operation, means connecting both of said conduit means to said closure means and to the interior of said can, whereby minus pressure may be applied to said teat cups through said first conduit means, said receptacle interior and said second conduit means, and controllable mechanical refrigerating and cooling means operatively connected to said container for continuously cooling the milk and removing body heat therefrom during the milking operation and maintaining a predetermined temperature] [2. A system for simultaneously milking a domestic farm animal and for cooling and storing the milk, without handling, in cans as it comes from the animal comprising a container for holding a milk can in an upright position, a milking machine including a first conduit means adapted for connection to a source of minus pressure, a second conduit means having teat cups for connection to the teats of the animal's udder, closure means closing the open end of said can and for permitting a minus pressure therein during the milking operation, means connecting both of said conduitmeans to said closure means and to the interior of said can, whereby minus pressure may be applied to said teat cups through said first conduit means, said receptacle interior and said second conduit means, and controllable mechanical refriger eases 7 ating and cooling means operatively connected to said container for continuously cooling the milk and removing body heat therefrom during the milking operation and maintaining a predetermined temperature, said refrigerating and cooling means including means for causing a substantially continuous flow of a cooling fiuid medium against the outside surfaces of said can.)

[3. A system for simultaneously milking a domestic farm animal and for cooling and storing the milk, without handling. in cans as it comes from the animal comprising a container for holding a milk can in an upright position, a milking machine including a first conduit means adapted for connection to a source oi minus pressure, a second conduit means having teat cups for connection to the teats of the animal's udder, closure means closing the open end of said can and for permitting a minus pressure therein during the milking operation, means connecting both of said conduit means to said closure means and to the interior of said can, whereby minus pressure may be applied to said teat cups through said first conduit means. said receptacle interior and said second conduit means, and controllable mechanical refrigerating and cooling means operatively connected to said container for continuously cooling the milk and removing body heat therefrom duringthe milking operation and maintaining a predetermined temperature, said refrigerating and cooling means including a coil for coolant and the exterior surfaces of said can while in said oontainen] 4. A system for simultaneously milking a domestic farm animal and for cooling and storing the milk, without handling, in cans as it comes from the animal comprising a container having a cooling chamber provided with supporting means for supporting a plurality milk cans in said chamber in upright position, [for holding a milk can in an upright position, a milking machine including] a first conduit means adapted for connection to a source of minus pressure, a second conduit means having teat cups for connection to the teats of the animal's udder, closure means closing the open end of said can a fan for blowing air through said coil and against and for permitting a minus pressure therein during the milking operation, means connecting both of said conduit means to said closure means and to the interior of said can, whereby minus pressure may be applied to said teat cups through said first conduit means. said can interior and said second conduit means, and controllable.

mechanical refrigerating and dissip ting [cooling] means operatively connected to said container for continuously cooling the milk and removing body heat therefromduring the milking operation and maintaining a predetermined temperature, said container having a removable top closure means extending through said top.

5. A system for simultaneously milking a domestic farm animal and for cooling and storing the milk, without handling, in cans as it comes second conduit means having-teat cups for conmotion to the teats of the animal's udder, closure.

provided with an aperture'therein, and said can meansclosing the openendofsaidcanandfor permittingaminuspressuretherelnduringths milking operation, means connecting both of said conduitmeanstosaidclosuremesnsandtothe interior of said can, whereby minus pressure may be applied to said teat cups through said first conduit means, said can interior and said second conduit means, and controllable mechanical refrigerating and dissipating [cooling] means operatively connected to said container for continuously cooling the milk and removing body heat therefrom during the milking operation and maintaining a predetermined temperature, said container having a removable top provided with an opening therein and said can closure means extending through said top and being in friction sealing contact therewith.

B. A system for simultaneously-milking a domesticfarmanimalandforcoolingandstorlng the milk, without handling. in cans as it comes from the animal comprising a container having a cooling chamber provided with suporting means [or supporting a plurality of milk cans in'said chamber in upright position, [for holding a milk can in an upright position, a milking machine including] a first conduit means adapted for connectiontoasourceofminuspressure,asccond conduit means having teat cups for connection to the teats of the animal's udder. closure means closing the open end of said can and for permitting a minus pressure therein during 'the milking operation, means connecting both of said conduit means to saidclosure means and to the interior of said can, whereby minus pressure may be applied to said teat cups through said first conduit means, said can interior and said second conduit means, and controllable mechanical refrigerating and dissipating [cooling] means operatively connected to said container for continuously cooling the milk and removing body heat therefrom during the milking operation and maintaining a predetermined temperature, means for attaching said refrigerating and cooling means to said container, said container having a side provided with an opening connecting the interior of said container with said refrigerating and cooling means, said latter means including a cooling coil and fan located adjacent said opening in said side whereby to circulate cooling air within the interior of said container and against the exterior surfaces of said can.

7. Apparatus for mechanically milking a cow 1 and delivering the fresh warm milk into a shipping-type milk can for prompt cooling, storage and subsequent shipment comprising a milk refrigerator cabinet having a refrigerated can compartment, said compartment being'provided with an opening, a receiving can in said compartment with its mouth accessible through said opening. a cover fitted through said opening and in fluidtight contact with the mouth of said can, said cover embodying means coacting with the marginal edge portions of said opening and affording a substantially air-tight connection between said cover and cabinet. as milk pickup and feeding line connected at one end to said cover for discharging fresh warm milk, by way of said cover, into said milk can, a milking machine suction line also extending at one end through said cover for drawingmilkthroughthefeedinglineanddis frigerator cabinet having a refrigerated can compartment, said compartment being provided with an opening, a receiving can in said compartment with its mouth accessible through said opening, a cover fitted through said opening and in fluidtight contact with the mouth of said can, said cover embodying means coacting with the marginal edge portions of said opening and affording a substantially air-tight connection between said cover and cabinet, a milk line and a suction line, said lines being in communication with the interior of said container, at least one of said lines passing through said cover.

9. A system for simultaneously milking a domestic farm animal and for cooling and storins the milk, without handling, in cans as it comes from the animal comprising a portable container having a cooling chamber provided with supporting means for supporting a plurality of milk cans in said chamber in upright position, [for holding a milk can in an upright position. a milking machine including] a first conduit means adapted for connection to a source of minus pressure, a second conduit means having teat cups for connection to the teats of the animal's udder, closure means closing the open end of said can and for permitting a minus pressure therein during the milking operation, means connecting both of said conduit means to said closure means and to the interior of said can, whereby minus pressure may be applied to said teat cups through said st conduit means, said can interior and sai V ond conduit means, and controllable mechanical refrigerating and dissipating [cooling] means including a compressor motor operatively connected to said container and to the interior of said cooling chamber for continuously cooling the milk and removing body heat therefrom during the milking operation and maintaining a predetermined temperature, and means for mounting said refrigerating and dissipating [cooling] means on said container.

10. A system for simultaneously milking a. domestic farm animal and for cooling and storing the milk, without handling, in cans as it comes from the animal comprising a portable container having a cooling chamber provided with, supporting means for supporting a plurality of milk cans in said chamber in upright position, [for holding a milk can in an upright position, a milking machine including] a first conduit means adapted for connection to a source of minus pressure, a

second conduit means having teat cups for connection to the teats of the animal's udder, closure means closing the open end of said can and for permitting a minus pressure therein during the milk operation, means connecting both of said conduit means to said closure means and to the interior of said can, whereby minus pressure may be applied to said teat cups through said first conduit means, said can interior and said second conduit means, and controllable mechanical refrigerating and dissipating [cooling] means operatively connected to said container for continuously cooling the milk and removing body heat therefrom during the milking operation and maintaining a predetermined temperature, and means for mounting said refrigerating and cooling means on said container, said refrigerating and cooling means including means in communication with the interior of said container for causing a substantially continuous flow of a cooling fluid medium against the outside surfaces of said can.

[11. A system for simultaneously milking a domestic farm animal and for cooling and storing the milk, without handling, in cans as it comes from the animal comprising a container for holding a milk can in an upright position, a milking machine including a first conduit means adapted for connection to a source of minus pressure, a second conduit means having teat cups for connectionto the teats of the animal's udder, closure means closing the open end of said can and for permitting a minus pressure therein during the milking operation, means connecting both of said conduit means to said closure means and to the interior of said can. whereby minus pressure may be applied to said teat cups through said first conduit means, said can interior and said second conduit means, and controllable mechanical refrigerating and cooling means operatively connected to said container for continuously cooling the milk and removing body heat therefrom during the milking operation and maintaining a predetermined temperature, said container having at least one opening and said closure means I extending through said opening and in engagement therewith] 12. A system for simultaneously milking a die-- mestic farm animal'and for cooling and storing the milk, without handling, in cans as it comes from the animal comprising a refrigerating cabinet having a cooling chamber provided with supporting means for supporting a plurality of milk cans in said chamber in upright position, a first conduit means adapted for connection to a source of minus pressure, a second conduit means having teat cups for connection to the teats of the animal's udder, closure means whereby the open end of one of said cans may be closed, means connecting both of said conduit means to said closure means whereby minus pressure may be applied to said teat cups and to the interior of said one can during the milki g operation, and controllable mechanical refrigerating and dissipating means including fluid circulating means operatively connected to said cooling chamber for continuously cooling the exterior surfaces of cans located in said container and removing body heat from the milk in said cans during the milkingoperation and maintaining a predetermined temperature in said refrigerating cabinet.

13. A system for simultaneously milking a domestic farm animal and for cooling and storing the milk, without handling, in cans as it comes from the animal comprising a refrigerating cabinet having a cooling chamber provided with sup porting means for supporting a plurality of milk cans in said chamber in upright position, a first conduit means adapted for connection to a source of minus pressure, a second conduit means having teat cups for connection to the teats of the animals udder, closure means whereby the open end of a can may be closed, means connecting both of said conduit means to said closure means whereby minus pressure may be applied to said teat cups and to the interior of said can during the milking operation, and controllable mechanical refrigerating and dissipating means'operatively connected to said refrigerating cabinet for continuously cooling the said cooling chamber and removing body heat from the milk in the cans during the milking operation and maintaining a predetermined temperature in said refrigthe outside surfaces of the cans, said refrigerating 1 l and cooling means further including a controllable mechanical heat exchange unit.

14. A system for simultaneously milking a domestic farm animal and for cooling and storing the milk. without handl ng. as it comes from the animal comprising a refrigerating cabinet having a cooling chamber provided with supporting means for supporting at least one can in said chamber, a first conduit means adapted for connection to a source of minus pressure. a second conduit means having teat cups for connection to the teats of the animals udder, closure means whereby the open end of a can may be closed, means connecting both of said conduit means to said closure means whereby minus pressure may be applied to said teat cups and to the interior of a can during the milking operation and controllable mechanical refrigerating and dissipating means including fluid circulating means operatively connected to said cooling chamber for continuously cooling the exterior surfaces of the can and removing body heat from the milk in the can during the milking operation and maintaining a predetermined temperature in said refrigcrating cabinet.

15. Asystem for simultaneously milking a domestic farm animal and for cooling and storing the milk, without handling, as it comes from the animal comprising a refrigerating cabinet having a cooling chamber provided with supporting means for supporting at least one can in' said chamber, a first conduit means adapted for connection to a source of minus pressure, a second conduit means having teat cups for connection to the teats of the animals udder, closure means whereby the open end of a can may be closed, means connecting both of said conduit means to said closure means whereby minus pressure may be applied to said teat cups and to the interior of said can during the milking operation, and controllable mechanical refrigerating and dissipating means operatively connected to said refrigerating cabinet for continuously cooling the exterior surfaces of said can and removing body heat from the milk in the can during the milking operation and maintaining a predetermined temperature in said refrigerating cabinet, said refrigerating and cooling means including means for causing a substantial continuous flow of a cooling fluid medium against the outside surfaces of. the can, said refrigerating and cooling means further including a controllable mechanical heat exchange unit.

16. A system for simultaneously milking a domestic farm animal and for cooling and storing the milk without handling in cans as it comes from the animal comprising; a container having a cooling chamber provided with .supporting .means for supporting a plurality of milk cans in said chamber in upright position, a first conduit -jmeans adapted for connection to a source of minus pressure, a second conduit means having teat cups for connection to theteats of the animal's udder, milk can closure means for permitting a minus pressure therein during the milking operation, means directly connecting both of said conduit 'means to said closure means, whereby minus pressure may be applied to said teat cups through said first conduit means, said closure means and said second conduit means, and controllable mechanical refrigerating and dissipating means includingfluid circulating means operatively connected to said cooling chamber for continuously cooling the milk and removing body heat therefrom during the milking operation and maintaining a predetermined temperature.

and fluid circulating means connected with said cooling chamber and operatively associated with said heat epchange unit for directing a fluid to be cooled over said heat exchange unit and in said cooling chamber.

18. A system for simultaneously milking a domestic farm animal and for cooling and storing the milk without handling in cans as .it comes from the animal comprising; a container having a cooling chamber provided with supporting means for supporting a plurality of milk cans in said chamber in upright position, a first conduit means adapted for connection to a source of minus pressure, a second conduit means having teat cups for connection to the teats of the animals udder, milk can closure means for permitting a minus pressure therein during the milking operation, means directly connecting both of said conduit means to said closure means, whereby min pressure may be applied to said teat cups thr h said first conduit means, said closure means and said second conduit means. and controllable mechanical refrigerating and cooling means operatively connected to said container for continuously cooling the milk and removing body heat therefrom during the milking operating and maintaining a predetermined temperature, a controllable mechanical refrigerating and dissipating means including a heat exchange unit, and fluid circulating means connected with said cooling chamber and operatively connected with said he t exchange unit for directing a fluid to be cooled over said heat exchange unit and in said cooling chamber.

19. A system for simultaneously milking a domestic farm animal and for cooling and storing the milk without handling in cans as it comes from the animal comprising; a container having a cooling chamber provided with supporting means for supporting a plurality of milk cans in said chamber in upright position, a first conduit means adapted for connection to a source of minus pressure, a second conduit means having teat cups for connection to the teats of the animals udder, milk can. closure means for permitting a minus pressure therein during the milking operation, means directly connecting both of said conduit means to said closure means. whereby minus pressure may be applied to said teat cups 'through said first conduit means, said closure means and said second conduit means, and con-.

trollable mechanical refrigerating and cooling means operatively connected to said container 13 cooling fluid medium in said cooling chamber.

20. A milk-loading system for cooling and storing milk directly as it comes from the animal during the milking operation, which comprises a refrigerator body, said body including a refrigerated compartment adapted to accommodate a can, a milking machine including a, first conduit means adapted for connection to a source of vacuum and a second conduit means connected to a milking apparatus including teat cups for connection to the teats of the animalsudder, closure means adapted to hermetically seal the open end of said can and for permitting a vacuum therein during the milking operation, each of said conduit means being in communication with the interior of said can through said closure means. whereby vacuum may be applied to said milking apparatus through said first conduit means, said can interior and said second conduit means, and means for operatively connecting refrigerating means to said compartment whereby milk is continuously cooled to remove body vheat therefrom during the milking operation.

21. A system for simultaneously milking a domestic farm animal and for cooling and storing the milk without handling as it comes from the animal comprising: a container having a cooling chamber provided with supporting means for supthrough said first conduit means, said closure means and said second conduit means, and controllable mechanical refrigerating and dissipating means mounted on said container operatively connected to said container including means for circulating a cooling medium within said cooling chamber for continuously cooling the milk in said can and removing body heat therefromduring the milking operation and maintaining a predetermined temperature.

GEORGE R. DUNCAN.

REFERENCES CITED The-following references are of record in the file of this patent and the original patent:

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Redin July 15, 1952' 

